Mujab, Shokhibul, Nurrahim Hasan Al Banna, Siti Shofiah, and Ethys Pranoto. 2026. “Analysis of Valve Clearance Variation Effects on Exhaust Gas Opacity in Biosolar-Fueled Mitsubishi L300 Diesel Engine”. Jurnal Perintis: Pengembangan Riset Inovatif Teknik, Teknologi, Dan Sains 2 (1(Januari-Februari). https://ejournal.pktj.ac.id/index.php/perintis/article/view/42-47.